Apparatus for scrubbing and treating gravel



April 1935- w. H. ALLSVVEDE 1,997,030

APPARATUS FOR SCRUBBING AND TREATING GRAVEL Filed April 19, 1934INVENTOR.

William fifiilcsu/eda Q ATTORNEYS I Patented Apr. 9, 1935 OFFICEAPPARATUS FOR. SCRUBBING AND. I I resume GRAVEL William H. Allswede,Hersey, Mich. Application April 1.951934. Serial. Neil-21.267

The Objects ofv thisinvention are: I V

to produce an improved and. cheap ap paratus for treating gralvelinorder to free-it from. rotten stone, hard clay lumps, agglomerates,

g, or. the like; which are present in gravel. even .aiter washing andwhich greatly interfere with they value of gravel for use as oneggresotein concrete work V II.

Second, to provide such an apparatus that will treat gravel which hasbeen screened to size and .wilL-by the erushingsction of the bells}.vitate it withthe gravel; and remove the obiec-tienable. materialreferred to, l I

, Third, to providesuch an apparatus in which m; the gravel to betreated-is fed continuously at one end of the machine to. come outif-reefrom. the objectionable materiel; I

1 Fourth. to. provide such an apparatus for carry ing out the methoddisclosed in-mycopendins anplicetion. for-Letters Patent filed, Aprilr9, 1934. I

1 Other objects and advantages of my invention will appear fromthedescription to follow. 1 invention is defined and pointed out intheclaims.

drawing, in which:

Fig. l is a. perspective view of apparatuswith portions broken away toshow the construction thereof.. 1 i 1 2 is. ardctail sectional viewtaken on line. 2-1-2: of 1, showing the means for agitating the device.I

3 is: a conventionalplanview of ap- I stood that this. construction canbe departed from paratus showing the driving means.

Referring to the drawing, l. isa. box preferably.

constructed of metal and adapted to receive gravcl from a hopper; thedischarge of. which is shown angle pieces-4 positioned near thebottom'of the.

side plates 2 and fixed thereto with rivets or bolts or. the. like. Oneend of the box is open as at 5 501 and the other end is provided with anend plate 6 cut away as at I to receive the hopper discharge 23 whichprojects-through the opening I.-

The box I is approximately twelvefeet long by sixfeet wide. and ismounted at anangle of about. 5F 20 degrees to the horizontal, slopingaway from Serial NO. 7.2.1.268"

A, structure which is a. preferred embodiment 01* my invention. isillustrated in the a.ccompzmyilris'.v

therein. which will be later-described. I. prefer to s Claims- X01.zoo-e) I f the hopper discharge 2. I The box is. mounted for agitationby -eny suitable shaker mechanism. The shaker mechanism disclosed isillustratedin detail in 2. A pair of eccentric shorts. 8 ex.-

tend transversely of the. box. .The shafts have. 5,

eccentric portions 9 fitted inbearings l0 fixed to the side plates. 2'of the box I. The shafts are mounted in bearings H which are. mounted onany suitablesupportand are provided at theirouterends with sprockets l2.connected by a. silent chain 13 which synchronizes the ration, to insureroperoperetion of the. shaking mechanism. One shaft is-driven by anysuitable means and; the other shaft is driven, through the sprocket l2endchein In, H 15.

3. I show a. plan view-oi the app ratus showing. the box I,tnesyncbronous chain H. a belt pulley?! mounted on onset the shaf s 8;com nected by belt to. sin-electric motor 25 having the driving pulley2'5 thereon. It will be der-. stood thatinstead or using a, belt andpulley arrangemen fordiivins'one ofthe shafts, a clcieinv drive ordirectdrive for the shaft could be used and instead of an electric motorany suitable drivins means couldbcemp oyed. I

I have illustrated the device without indicatin anyspring suDPQrtsforthe box althou h. these might beused. it beins nly necessary thatthe. box be agitated sufiiciently. to. move the balls run the mechanismat .froml to. 300 revolutions p r minute depend-mention the work to bedone and provide eccentric shafts 8 which. give a. throw ing stroke offrom. 1 to 2. inches. It will berunder- 86. without interfering with theoperation. of the device materially. 1 i

Extending transversely of the box are Darth tion members. I which dividethe box into. compartments or sections. and extending from the. p ofthe. partition H upwardly and at an angle are foraminous elements [5,The elementsv [5 are supported at their tops by cross members It. one ofwhich is located at the open end 5 of; the box and serves also as a;stifiener.

In each compartment formed by the pertitionv members ll are a pluralityof balls H. These balls may be of any suitable material, and also. inreferring to them as balls... itwill be understoodthat they can be ofany suitable shape o h than round, it being only essentialthat they beadapted to crush the objectionable material in thesgrevel as it isagitated with them. I

.The. 'foraminous elements. ii. can be. of any. desired type but I haveillustrated a plate having.

Kill.

, the foraminouselement and tend to roll back into- 7 is, passed'out incleaned and'graded condition,

ready for shipment or immediate use.

holes [8 therein. These holes are of a larger size than the gravel to betreated so that the gravel can pass freely therethrough, and the ballsare of a larger size than the holes so that the balls are retained'inthe separate compartments to act upon'gravel as it is fed through themachine. 7

The foraminous elements l slope in a direction oppositetothe. slope ofthe box and ata greater angle, it being necessary that the slopebe suchthat the balls,'during the agitation, climb up on the compartment. v v vIn construction of the box I,"I prefer 'tojprovide Wear plates IS in thebottoms of the compartmentso that wear on the surfaces'will not destroythe machine, and the plates can bereplates could also be provided on thesidesif desired.

In the' bottom plate3 at the open end 5 01 the.box,-I provide 'a seriesof openings 20 which serve as a gravel scree'nand Iprovidea watersprayer 2| for spraying the gravel as it comes from the machine towashthe broken'stone and clay through the screen; The gravel is passed tosuitable collecting means, If desired, the holes 20 may be left out anda separate screen may be 'provided. At the hopper discharged-3,

I may also provide a watersprayflfl'to spray is sufficient to cause theballs and-gravel'to be thoroughly mixed and agitated together and thecrushing action of the balls is suchthat the rotten stone and clay lumpsor the 7 like are 1-broken up and the gravel passed through'the" screen."The mixture*ofthe gravel and balls rides up on the foraminous elementl5 and thecrushing action of the balls forces the gravel through thescreen and assists in breaking up; the objectionable materials 'Theangle'of the foraminous elementl5 is such that the balls are kept downat or near the compartment and the crushing action of them is assured. Ihave shown three compartments but it is obvious that if de-- 'z siredmorecompar'tments' could-be supplied, or

if the work is light, fewer compartments would do. As the gravel passesover the openings" the spray'of water 2| washes the'gravel'and it It.will beappreciated that this machine is of a very cheapand'simple-construction and can be transported and- 0 rated on the jobif necessary.

in an embodiment which hasprovenfhigh'ly satisfactory. I havenotattem'pted to illustrateanddescribe variousother adaptations orembodiments'which I contemplate as it believed that this embodimentwill-enable those skilled in the art 'to embo'dy or adapt thesame as maybe desired.

gravel be 1 said box to form compartments-in the bottom 1. In anapparatus for treating gravel to remove rotten stone, hard clay lumpsand the like, the combination of gravel feeding means, a box to receivegravel from said feeding means tipped downwardly from said feedingmeans, means for agitating said box comprising transverse eccentricshafts, sprockets on said shafts, a chain connecting said sprockets, andmeans for driving one of said shafts to impart 'a shaking motion to saidbox, a pluralitylof transverse partitions extending upwardly from thebottom of said box to form compartments in the bottom thereof,

a plurality of slanting foraminous elements hav- .ing holes thereinlarger than the gravel to be treated and each sloping upwardly from thepartitions in a direction opposite the slope of said i V box and at suchan angle that balls rolled up on moved when worn andothers-substituted.- -Such-'- said foraminous element will roll backinto the bottom of the compartment, a plurality of balls eachcompartment larger than the holes in said foraminous elementsandiadapted to crush therotten stoneandclay lumps when agitated with thegra'velto'be treated to forcethe gravel through the holes, and a gravel,sorting screen to remove the {disintegrated rotten stone and clay lumps.

2. In an apparatus for treating gravel tore-1 move rotten stone, hardclay lumps and the like,

agitating said box, "a plurality offtransverse par-- titions extendingupwardly from thebottofirof 9 thereof, a plurality of slantingforaminous elements having holes therein larger than the gravel to betreated and each sloping upwardly from the partitions in adirectionopposite the slopeof said box and at such an angle that ballsrolled up on said foraminous element will roll back into" the bottom ofthe compartment, a plurality of balls in each compartment and largerthan the holes in said foraminous elements and adapted to crush therotten stone and clay lumps when agitated with the gravel to be treatedand'to force the-gravel through the holes, and a gravel sorting moverotten stone, hard clay lumps and the'like';

the combination of gravel feeding means, a box to receive gravel fromsaid feeding means tipped? downwardly from said feeding means, meansfor" agitating said box, a plurality .of'transverse partitions extendingupwardly from thebottom of said box to form compartments in the bottomthereof, a plurality of slanting foraminous'elements having holestherein largerxthan the gravel to be treated and each sloping upwardlyfrom the partitions in a direction opposite 'the slope of said box andat such an angle that ballsrolled up on said foraminous element willroll back into the bottom of thecompartment, and a plurality V V ofballsin each compartment and larger than'th'e .I have illustrated anddescribed my invention holes in said foraminous elements and adapted tocrush the-rotten stone and-clay lumps when agl-Z tated with the gravelto betreated'and to force:

the gravel through the holes.

4. In anapparatus for treating gravel to'remove rotten stone, hard claylumps and the like, the combination of gravel feeding means, aibox toreceive gravel from said feeding means tipped downwardly from saidfeeding means, means for agitating said'box, aplurality ofslanting-fo'rathe gravel to be treated and each sloping from the bottomof said box upwardly in a direction opposite the slope of said box toform a series of compartments and at such an angle that balls rolled upon said foraminous element will roll back into the bottom of thecompartment, a plurality 01 balls in each compartment and larger thanthe holes in said foraminous elements and adapted to crush the rottenstone and clay lumps when agitated with the gravel to be treated and toforce the gravel through the holes, and a gravel sorting screen toremove the disintegrated rotten stone and clay lumps.

5. In an apparatus for treating gravel to remove rotten stone, hard claylumps and the like, the combination of gravel feeding means, a box toreceive gravel from said feeding means tipped downwardly from saidfeeding means, means for agitating said box, a plurality of slantingforaminous elements having holes therein larger than the gravel to betreated and each sloping from the bottom of said box upwardly in adirection opposite the slope of saidbox to form a series of compartmentsand at such an angle that balls rolled up on said ioraminous elementwill roll back into the bottom of thecompartment, and a plurality ofballs in each compartment and larger than the holes in said foraminouselements and adapted to crush the rotten stone and clay lumps whenagitated with the gravel to be treated and to force the gravel throughthe holes. WILLIAM H. ALLSWEDE.

